Multiple choice

What is the possibility of a couple to have one son and one daughter?

  1. 50%

  2. 25%

  3. 75%

  4. 100%

  5. None of these
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A Correct answer
Explanation

According to Pascal triangle, the ratio to be used for two children will be 1 : 2 : 1. Here, 1 represents two sons, 2 represents one son and one daughter, 1 represents two daughters, respectively. So, probability of one son and one daughter is 2/4, i.e. 1/2 x 100 = 50%.

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